I like the Armada one better, personally. To me, the paint on the face of the Micron Legend one looks weird with the black stripes running down his face. Whereas on the Armada one they're more of a gunmetal color and more subtle. The smokey clear plastic also works better to hide the inner workings of the chest and the hollowness of the abdomen. Plus, Armada's Unicron's hella cheap.